GB
27
Use and maintenance instructions
English
Electric submersible pumps for sewage
5. INSTALLATION
Pools, tanks or pits fitted for the electric pump and positioning of the same in respect of drainage
system level are regulated by directives that must be respected.
5.1 PRELIMINARY INSPECTIONS
Before installation proceed as follows:
- Check that implements and equipment used for handling, lifting and positioning are well dimensioned and
comply with local safety regulations.
-
Check that pit, pool or tank are well dimensioned and that water level assures a correct running of electric
pump with limited startings per hour.
Check, furthermore, that solids in suspension or other foreign materials able to clog the electric pump are not
present; install a grid when necessary.
- Check that the electric network power is higher than the power absorbed by the electric pump.
- Verify frequency, voltage, length of electric cables keeping in mind that the motor voltage should respect
limits indicated at par. 3.2.
- Verify the efficiency of all components (pannel, electrodes etc.).
- Electric pumps equipped with oil chamber between mechanical seals are already filled with the correct
quantity of oil.
- Verify the correct quantity of oil after transport, after a long period of inactivity, after storage in hot hambients
or whenever a lack of oil is presumed.
5.2 PUMP POSITIONING
Two different types of installation are possible:
- Mobile when the electric pump is suspended by a proper chain in resistant material anchored to the lifting
handle.
- Fixed when the electric pump stands on the bottom of pit or tank.
The assessment of the risk of electric shock is issued by the installer.
Ckeck that pit or tank are well dimensioned and that water level assures a correct running of the electric pump
with limited startings per hour.
Check, furthermore, that the pit is equipped with suitable devices to prevent that liquid dropping in the same
could cause any possible turbolence and air pockets in the pump suction.
All operations of installation must be carried out with the electric pump disconnected from general electric
network.
Minimum level for
continuous running
Minimum level for short
running (2-3 min.)
Fig. 3
Fig. 4
GB
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Страница 119: ...119 RU 5 2 2 6 7 7 7 C 7 D 1 2 3 4 5 6 7 8 9 10 11 12 5 3 IDN 30 7 D C B A 6...
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Страница 123: ...123 RU 4000 8000 500 5 2 7 2 S 1 2 3 n 4 8 9 PPOM...
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